Auxiliary air inlet and mixing device



Feb. '24. "1925.

w. J. BLIFFERT AUXILIARY AIRINLE'I' AND umue nsvxcs Filed June 1,1925

Patented Feb. 24, 1925.

UNITED star WALTER J. BLIFFERT, or MILWAUKEE, Wisconsin.

AUXILIARY A133, INLET AND MIXING DEVICE.

Application filed June 1,

To all whom it may cancer 22 Be it known that I, TVALTER J. BLIFFERT, a citizen of the United States, and resident of Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Auxiliary Air Inlet and Mixing Devices; and I do hereby declare that the following is a full, clear, and exact description thereof.

This invention relates to manifold gaskets and is particularly directed to a gasket adapted to be. inserted between the flanges of the manifold of an internal combustion engine.

This invention is an improvement over that disclosed in my Patent No. 1,501,196 for manifold gaskets, granted July 15, 192 1, and has in general the same objects as those of such patent.

Further objects are to provide a manifold gasket which would break up the flowing stream through the manifold and insure intimate mixing of the fuel and air, in which. the liquid particles carried by the flowing stream are held temporarily in a more or less suspended manner within the manifold to insure rapid evaporation thereof, in which liquid adhering to the side walls of the manifold is stopped and vaporized, and in which an additional supply of air is furnished to aid in this evaporating of the solid drops of fuel and in improving the mixture.

An embodiment of the invention is shown in the accompanying drawings, in which:

Figure 1 is a side elevation partly in sec tion, of an intake manifold and carburetor, with the gasket in position.

Figure 2 is an enlarged view of the gasket.

Figure 3 is a sectional view on the line 3-3 of Figure 2, drawn to a further enlarged scale.

The device is adapted-to be positioned in the intake manifold between the portion 1 thereof and the portion 2, which joins the carburetor 3. It comprises a plate 4 corresponding in contour to that of the adjacent flanges of the manifold and provided with apertures 5 adapted to receive the attaching bolts of such flanges. This plate has a central cutout portion 6 of slightly greater diameterthan the diameter of the manifold and is provided with a downwardly extending elongated tongue 7 from its upper side and with an upwardly ex- 192-3. Serial NO- 642,787.

tending tongue 8. The upwardly extending tongue 8 is curved towards the incoming stream of gases, as may be seen from Figures 1 and 2, and is provided with a groove 9 which gradually merges into a slot 10, such slot extending to the outer edge of the device. The slot 10 communicates with the interior of a fitting 11 carried by the lower end of the gasket and adapted to receive a pipe 12, such pipe being held by means of the union 13, as illustrated in Figure 3.

A cage formed of wire mesh is provided and comprises cylindrical walls 1 1 which closely fit the walls of the manifold, as may be seen from Figures 1 and 2 and with end walls 15 and 16. The wall 16 is secured to the downwardly extending tongue 7, as by means of soldering, for instance, and definitely retains in positions the cage with reference to the gasket.

As is well known, the charge, as it leaves the carburetor, contains solid drops of fuel which it is undesirable to pass into the cylinder. These drops are caught by the screen 16 and are held suspended in the flowing stream, and thus are rapidly evaporated. However, any minute drops that may pass the screen 16 are caught by the screen 15 and are thus held in a suspended manner to hasten evaporation. It is also well known that liquid fuel adheres to the walls of the manifold and creeps along such walls. This liquid fuel gradually collects on the lower side of the manifold walls and at this point a fresh stream of air, or of air and fuel, is drawn in through the slot 10 and groove 9 and rapidly atomizes and vaporizes the liquid fuel collected along the walls of the manifold. A further action is due to the cylindrical walls 14. These walls prevent any liquid from creeping along the Ina-nifold, if ithas succeeded in passing the lip 8. The liquid is thus stopped and held so that the rapidly passing charge may sweep over it and vaporize it, thus preventing the liquid fuel from arriving at the cylinders.

It will thus be seen that a gasket has been provided which may be most readily positioned between adjacent flanges of a manifold, which will intimately mix the fuel and air, which will insure complete evaporation of the fuel, and which is of simple and sturdy construction.

Although one form of the invention has been described in considerable detail, it is to be understood that the invention may be variously embodied and is to be limited only as claimed.

I claim 1. A manifold gasket adapted to be positioned between adjacent flanges of an intake manifold of an internal combustion engine, said gasket comprising a body portion having an aperture adapted to conform to the bore of said manifold, a wire cage carried by said gasket and adapted to be positioned within said manifold, and a slotted tongue formed integrally with said gasket and ex tending into said opening and curved towards the entrance in the said manifold, said gasket having an opening extending outwardly beyond said manifold and communicating with the slot in said tongue.

2. The combination of an intake manifold, a carburetor and a gasket located between said carburetor and said manifold and 00111- prising a body portion having an aperture corresponding to the bore of said manifold, a lip extending into said aperture and integral with said gasket, a wire cage carried by said lip and located within said manifold and having fiat ends walls and a cylindrical. wall conforming to the interior surface of said. manifold, and a second lip projecting into said aperture and having a groove therein, said gasket having a duct extending outwardly from said manifold and communieating with said groove said second lip being curved toward the entrance of the manifold.

In testimony that I claim the foregoing I have hereunto set my hand at Milwaukee, in the county of Milwaukee and State of Wisconsin.

WALTER J, BLIFFERT. 

